Bradford White® Gas Water Heater, 80000 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 55 gal Tank, Piezo Ignition, Atmospheric Vent, 4 in Vent, 78 gph Recovery, 3/4 in NPT Water Connection, 150 psi, 180 deg F, Ultra Low Nox: No, Steel, 22 in Dia x 59-1/2 in H